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Finding the Fourth Proportional to 225,083.15, 310,603.13 and 123,088.76

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Solution

The fourth proportional to 225,083.15, 310,603.13 and 123,088.76 is: 169,856.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,083.15 : 310,603.13 = 123,088.76 : x
  2. Step 2: Convert to fraction form
    225,083.15/310,603.13 = 123,088.76/x
  3. Step 3: Cross multiply
    225,083.15x = 310,603.13 × 123,088.76
  4. Step 4: Simplify right side
    225,083.15x = 38,231,751,955.36
  5. Step 5: Solve for x
    x = 38,231,751,955.36/225,083.15
  6. Step 6: Final answer
    x = 169,856.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.